RE: Walmart rifles....and resources...
In my opinion, any of the calibers you mentioned would do the job. I have been a 270 shooter for 20 years, and now my son is too. I am currently shooting a 300 WSM and like it too. I have never owned a Savage rifle but have heard from friends that they are super accurate and very dependable. For the money, you really can't go wrong. Good luck with YOUR decision.